Map of Minahassa from the measurements and recordings in 1851-52 of Mr. S.H. and G.A. de Lange, geographic engineers, those of Mr. F.W. Paepke Bulow, land surveyor from Manado, and designed and assembled by S.C.J.W. van Musschenbroek; in stone print brought to the Topographical Institute in The Hague. Netherlands (1878)
Nationaal Archief
